Date: Wed, 2 Jun 2004 11:06:41 +0200 From: Frode Nordahl <frode@nordahl.net> To: Bosko Milekic <bmilekic@freebsd.org> Cc: freebsd-current@freebsd.org Subject: Re: [HEADS-UP] mbuma is in the tree Message-ID: <29C3F4DB-B474-11D8-A18D-000A95A9A574@nordahl.net> In-Reply-To: <20040531215101.GA60299@freefall.freebsd.org> References: <20040531215101.GA60299@freefall.freebsd.org>
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On May 31, 2004, at 23:51, Bosko Milekic wrote:
> Additional things worth noting/known issues (READ):
[snip]
> - Giant leak in NFS code sometimes occurs, can't
> reproduce but currently analyzing; brueffer is
> able to reproduce but THIS IS NOT an mbuma-specific
> problem and currently occurs even WITHOUT mbuma.
Just a mee too on this one.
I'm running two NFS servers on 5.2.1-RELEASE (with the old mbuf code
obviously), and I see the problem with leakage here. Don't know a way
to reproduce it yet, but it happends over time. This happends both on a
UP and a SMP machine.
After more than a month of uptime, the mbuf map starts to get eaten up.
Is there any way to look at the mbuf cache while the system is running
to see what is in there?
Example:
host1: up 76 days
mbuf usage:
GEN cache: 1962/4256 (in use/in pool)
CPU #0 cache: 22742/23040 (in use/in pool)
Total: 24704/27296 (in use/in pool)
Mbuf cache high watermark: 512
Maximum possible: 51200
Allocated mbuf types:
24670 mbufs allocated to data
31 mbufs allocated to packet headers
3 mbufs allocated to socket names and addresses
53% of mbuf map consumed
host2: up 23 days
mbuf usage:
GEN cache: 1/768 (in use/in pool)
CPU #0 cache: 254/608 (in use/in pool)
CPU #1 cache: 0/512 (in use/in pool)
CPU #2 cache: 0/512 (in use/in pool)
CPU #3 cache: 3/512 (in use/in pool)
Total: 258/2912 (in use/in pool)
Mbuf cache high watermark: 512
Maximum possible: 51200
Allocated mbuf types:
258 mbufs allocated to data
5% of mbuf map consumed
Cheers,
Frode Nordahl
> Cheers,
> Bosko
>
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